Gaya APA

Brawner, C., Milligan, V. (1971). Stability in Open Pit Mining . : The American Institute of Mining Metallurgi and Petroleum Engineers, Inc..

Gaya MLA

Brawner, C.O.., Milligan, V.. "Stability in Open Pit Mining". : The American Institute of Mining Metallurgi and Petroleum Engineers, Inc., 1971. Text.